USA - What's going on with Justin Bieber (31)? The singer is kissing another woman and his fans are convinced: he seems much happier with her than with his wife Hailey Bieber (28)!

Last Thursday evening, the "Sorry" artist posted a video on Instagram showing him at the birthday party of American rapper Sexyy Red (27).

As Page Six reported, he kissed the 27-year-old on the cheek and gave her a warm hug.

The 31-year-old was beaming all over his face and many fans immediately took this as an opportunity to compare his demeanor towards the rapper and his wife.

"Why does he seem happier with her than with Hailey?" asked one of his followers under the post.

Another person said they had completely forgotten that Justin could smile at all. A third fan said he hadn't seen the 31-year-old this happy for a long time.

But not everyone is on Justin's side, with many also defending his wife Hailey.

"When you're married, not everything is always fine and dandy - God forbid the man has fun sometimes," wrote one fan.

The 28-year-old didn't seem to mind the video herself either. She commented three heart eyes emojis under his post.

Rumors about a possible crisis in Justin and Hailey's marriage have been circulating for some time.

Just a few weeks ago, the model unfollowed him on Instagram , which only strengthened the speculation.